Planet. Corman developed it for Millennium Pictures, the company he formed after he sold New World Pictures. Millennium was subsequently renamed "New Horizons". The exterior shots were made in Ischigualasto Provincial Park in San Juan, also known as Valle de la Luna ("Valley of the Moon"), due to its otherworldly appearance. Most of the film was shot inside Estudios Baires Film S.A. and Campo de Mayo, in Buenos Aires Province. During an argument with his girlfriend before production started, David Carradine punched a wall and fractured his right hand. As a result Carradine, who was right-handed, was trained by Anthony De Longis (who was the action and stunts coordinator, and also played the villain Kief) to learn swordfighting with his left hand. To conceal the cast on his hand, Carradine used a pointed black glove on his right arm while filming. In Carradine's memoirs, the actor states he broke his hand three days into filming, but he doesn't say how. The outfit that Carradine uses for his character of Kain is the same he later wore for the 1991 B movie/post-apocalyptic action film Dune Warriors. In a rather obvious coincidence, Luke Askew again played the antagonist/villain role in the latter film. Carradine says the director "was obsessed by the body of the actress who played the priestess [María Socas] so he costumed her in a topless outfit. Everywhere you looked there was this barebreasted woman." Carradine liked the movie because of its sword play and the fighting style he helped design but says "don't expect a great movie" because the director quit during editing after a fight with Corman (which erupted because he had gone two weeks over schedule), meaning the editing was finished by two teams in two different countries. "It's a little uneven", said Carradine of the film. Similarities with Yojimbo According to William Stout, John Broderick asked him to write a sword and sorcery screenplay based on Akira Kurosawa's 1961 Samurai film Yojimbo, which he did, then rewrote to distance the story from that original. After a number of rewrites, Broderick took the script and shopped it around. Several years later, Stout was surprised to hear that Broderick was making a film based on that script, but without Stout's name on it and without paying Stout. Calling up the executive producer, Roger Corman, Stout managed to remedy that situation. However, upon watching the finished product, Stout was